Which of the following statements about pump operations is NOT a correct statement?() ["In order for a fluid to be pumped, a fluid must be made to flow","A substance must be cold in order for it to be pumped","The kinetic energy imparted by the pump can be used to force a liquid through a hydraulic system","A pump must receive its energy from an external source"]
保护现场的原始状态,包括()不随意挪动位置。 ["人员","痕迹","车辆","散落物"]
As in the case of a voyage charter-party,it is implied in all bills of lading that()will be made from the contractual route unless such deviation is justified. ["deviation","no deviation","navigation","no navigatio"]
要删除文件或文件夹首先应()。 ["选定要删除的文件或文件夹","清空回收站","打开回收站","对文件或文件夹进行剪切"]
Most pump manufacturers recommend that the suction piping dimension for centrifugal pumps be (). ["one size smaller than the pump suction nozzle","the same size as the pump suction nozzle","one size larger than the pump suction nozzle","installed with a short radius elbow at the pum"]
设计一个证明植物具有蒸腾作用的实验装置。